Anyone know what the fully-accessorized weights are, AMC 2.5L vs. 258 or 4.0?
I know this list has a bias against things less than 2 * 4 cylinders, but the 2.5 sounds like a good retrofit for older, smaller cars.
If there's substantial weight differences it would help a lot; also it moves the mass towards the back of the car, always a good thing (for front-heavy cars like AMC/Rambler).
Modest turbo on one of these things for HP around 180 would be very, very hot.